Extension cord ruler



FIG. 1 is a side perspective view of the extension cord ruler, showing my new design;

FIG. 2 is a front elevation view of the extension cord ruler of FIG. 1;

FIG. 3 is a front elevation view of the extension cord ruler of FIG. 2, rotated upwardly by 90°; and,

FIG. 4 is a front elevation view of the extension cord ruler of FIG. 2, rotated downwardly by 90°.

The broken lines depict unclaimed environment with the extending collar adjacent the left side male plug having an unclaimed shape except for a flat surface aligned with the beginning of the ruled section.

The extension cord is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design. 

CLAIM The ornamental design for an extension cord ruler, as shown and described. 